For a long time, creationists claimed that the dust layer on the moon was too
thin if dust had truly been falling on it for billions of years. They based this
claim on early estimates—by evolutionists—of the influx of moon dust, and
worries that the moon landers would sink into this dust layer. But these early
estimates were wrong, and by the time of the Apollo landings, NASA was not
worried about sinking. So the dust layer thickness can’t be used as proof of a
young moon (or of an old one, either).